IUPAC 名称
{[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-2-({[hydroxy({hydroxy[3-hydroxy-2,2-dimethyl-3-({2-[(2-{[(3S,7R,11R)-3,7,11,15-tetramethylhexadecanoyl]sulfanyl}ethyl)carbamoyl]ethyl}carbamoyl)propoxy]phosphoryl}oxy)phosphoryl]oxy}methyl)oxolan-3-yl]oxy}phosphonic acid
描述
Phytanoyl CoA is a coenzyme A derivative of phytanic acid. Phytanic acid is present in human diet or in animal tissues where it may be derived from chlorophyll in plant extracts. Specifically it is an epimeric metabolite of the isoprenoid side chain of chlorophyll. Owing to the presence of its epimeric beta-methyl group, phytanic acid cannot be metabolized by beta-oxidation. Instead, it is metabolized in peroxisomes via alpha-oxidation to give pristanic acid, which is then oxidized by beta-oxidation. PhyH (phytanoyl-CoA 2-hydroxylase) catalyses hydroxylation of phytanoyl-CoA. Mutations of PhyH can lead to phytanic acid accumulation. High levels of phytanic acid are found in patients suffering from Refsum's syndrome. This inherited neurological disorder is characterized by an accumulation of phytanic acid in blood and tissues. Clinically it is characterized by adult onset retinitis pigmentosa, anosmia, sensory neuropathy, and phytanic acidaemia. This disorder has been found to be related to deficiency in the α-oxidation pathway in the liver. (PMID: 17956235). Phytanoyl CoA and other branched-chain fatty acid CoA products are potent inducers of the peroxisome proliferator-activated receptor PPARalpha, a nuclear receptor that enhances transcription of peroxisomal enzymes mediating beta-oxidation of these potentially toxic fatty acids (PMID: 16768463). Pyruvate dehydrogenase and 2-oxoglutarate dehydrogenase are strongly inhibited by phytanoyl-CoA. Decreased activity of these important mitochondrial metabolism complexes might therefore contribute to neurological symptoms upon accumulation of phytanic acid in Refsum disease (PMID: 16737698). [HMDB]
InChI标识符
InChI=1S/C41H74N7O17P3S/c1-26(2)11-8-12-27(3)13-9-14-28(4)15-10-16-29(5)21-32(50)69-20-19-43-31(49)17-18-44-39(53)36(52)41(6,7)23-62-68(59,60)65-67(57,58)61-22-30-35(64-66(54,55)56)34(51)40(63-30)48-25-47-33-37(42)45-24-46-38(33)48/h24-30,34-36,40,51-52H,8-23H2,1-7H3,(H,43,49)(H,44,53)(H,57,58)(H,59,60)(H2,42,45,46)(H2,54,55,56)/t27-,28-,29+,30-,34-,35-,36?,40-/m1/s1